BuildRules/Mississauga/Roof replacement

Mississauga project guide

Do you need a permit to replace roof shingles in Mississauga?

Check Mississauga roof replacement permit rules and the exemption for re-shingling a roof.

1 min readReviewed Oct 1, 2026

The short answerConditional

Re-shingling a roof is listed as work that does not require a building permit.

This exemption covers re-shingling. Structural roof work, skylights or other regulated alterations can create a different permit requirement.

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What changes the answer.

Start with these conditions. The official reference is attached to each one.

Re-shinglingPermit not requiredConditional

Mississauga lists re-shingling a roof among projects that do not need a building permit.

Official sourceCity of MississaugaWhen a building permit is required · Roofing, skylights, solar and retaining walls

Verified2026-10-01Open proof

SkylightPermit requiredConditional

Mississauga separately lists skylights among permit-required projects.

Official sourceCity of MississaugaWhen a building permit is required · Roofing, skylights, solar and retaining walls

Verified2026-10-01Open proof

Structural roof workConfirm separatelyInfo

Changes beyond simple re-shingling should be reviewed as construction rather than maintenance.

Official sourceCity of MississaugaWhen a building permit is required · Roofing, skylights, solar and retaining walls

Verified2026-10-01Open proof

Your preparation checklist

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Written roofing scope
Existing roof information if structural changes are proposed
Structural drawings for framing changes
Applicable permit forms for regulated work

Open the focused permit checklist

Fees and timing

TimelineConfirm the current municipal review stream after a complete application is submitted.

FeesConfirm the current Mississauga permit fee for the exact scope before filing.

Next steps

Confirm the work is only re-shingling
Identify skylights or framing changes
Separate maintenance from structural alterations
Apply if another permit trigger is present

Same project, different city

See how this rule changes across Ontario.

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BuildRules principle

Do not confuse “no permit” with “no rules.”

Zoning, overlays, safety rules and other constraints can still apply.

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